87190280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{128221}}^1$

素因数の和:128249

約数の個数: 32

約数和(自身を含む): 207719640

約数和(自身を除く): 120529360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 128221, 256442, 512884, 641105, 1025768, 1282210, 2179757, 2564420, 4359514, 5128840, 8719028, 10898785, 17438056, 21797570, 43595140, 87190280]

約数ペア:

[(1, 87190280), (2, 43595140), (4, 21797570), (5, 17438056), (8, 10898785), (10, 8719028), (17, 5128840), (20, 4359514), (34, 2564420), (40, 2179757), (68, 1282210), (85, 1025768), (136, 641105), (170, 512884), (340, 256442), (680, 128221)]